This is intended as text that could be displayed in a help window the first time someone runs jEdit.

Welcome to jEdit. Go to Plugins->Plugin Manager to get started customizing jEdit for your needs. You'll find plugins for code completion, formatting, compiling, and many other things. Plugins can be docked to the main window by opening them and clicking the triangle in their upper left corner.

The main settings panel is under Utilities->Global Options. Plugin settings can be accessed through Plugins->Plugin Options.

IRC: join channel #jEdit on irc.freenode.net
(the IRC plugin will connect to this by default)

And don't forget jEdit's own Online Help

If the FAQ and User Guide don't answer your question, you'll probably want to ask on the mailing lists or the forums. More involved discussions are probably best held on the wiki, since you'll be able to accumulate and revise ideas, and it will be easier for people to follow.